%I A107909
%S A107909 0,1,2,3,4,5,6,7,8,9,10,11,13,14,15,16,17,18,20,21,22,23,26,27,29,30,31,
%T A107909 32,33,34,36,37,40,41,42,43,45,46,47,53,54,55,58,59,61,62,63,64,65,66,
%U A107909 68,69,72,73,74,80,81,82,84,85,86,87,90,91,93,94,95,106,107,109,110,111
%N A107909 Numbers having no consecutive zeros or no consecutive ones in binary 
               representation.
%C A107909 Union of A003754 and A003714, complement of A107911;
%C A107909 a(A023548(n+2)) = A052940(n+1) for n>0;
%C A107909 a(A001924(n)) = A000225(n) = 2^n - 1;
%C A107909 a(A000126(n)) = A000079(n) = 2^n for n>0;
%C A107909 A107910(n) = a(n+1) - a(n).
%Y A107909 Cf. A007088, A107907.
%Y A107909 Sequence in context: A131881 A053460 A065200 this_sequence A067340 A085924 
               A072774
%Y A107909 Adjacent sequences: A107906 A107907 A107908 this_sequence A107910 A107911 
               A107912
%K A107909 nonn
%O A107909 0,3
%A A107909 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 28 2005